package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.CategoryDTO;
import com.sky.dto.CategoryPageQueryDTO;
import com.sky.entity.Category;
import com.sky.entity.Dish;
import com.sky.entity.Setmeal;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.CategoryMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.CategoryService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
@Slf4j
public class CategoryServiceImpl implements CategoryService {
    @Autowired
    private DishMapper dishMapper;

    @Autowired
    private SetmealMapper setmealMapper;

    @Autowired
    private CategoryMapper categoryMapper;
    /**
     * 新增分类
     * @param categoryDTO
     */
    public void insertCategory(CategoryDTO categoryDTO) {
        Category category = new Category();
        BeanUtils.copyProperties(categoryDTO,category);
        category.setStatus(StatusConstant.DISABLE);
        categoryMapper.insertCategory(category);
    }

    /**
     * 分类分页条件查询
     * @param categoryPageQueryDTO
     * @return
     */
    public PageResult categoryPage(CategoryPageQueryDTO categoryPageQueryDTO) {
        PageHelper.startPage(categoryPageQueryDTO.getPage(),categoryPageQueryDTO.getPageSize());
        //条件查询
        Page<Category> page = categoryMapper.categoryPage(categoryPageQueryDTO);
        return new PageResult(page.getTotal(),page);
    }

    /**
     * 修改分类
     * @param categoryDTO
     */
    public void updateCategory(CategoryDTO categoryDTO) {
        Category category = new Category();
        BeanUtils.copyProperties(categoryDTO,category);
        categoryMapper.updateCategory(category);
    }

    /**
     * 启用禁用分类
     * @param status
     * @param id
     */
    public void EnableOrDisableCategory(Integer status, Long id) {
        Category category = Category.builder()
                .id(id)
                .status(status)
                .build();
        categoryMapper.updateCategory(category);
    }


    /**
     * 根据id删除分类
     * @param id
     */
    public void deleteCategoryById(Long id) {
        //分类下有菜品或者套餐，不能删除
        List<Dish> dishList = dishMapper.getDishListByCategoryId(id);
        if (dishList != null && dishList.size() > 0){
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_DISH);
        }
        List<Setmeal> setmealList = setmealMapper.getSetmealListByCategoryId(id);
        if (setmealList != null && setmealList.size() > 0){
            throw new DeletionNotAllowedException(MessageConstant.DISH_BE_RELATED_BY_SETMEAL);
        }
        categoryMapper.deleteCategoryById(id);
    }

    /**
     * 根据类型查询分类
     * @param type
     * @return
     */
    public List<Category> getCategoryListByType(Integer type) {
        return categoryMapper.getCategoryListByType(type);
    }
}
